Working head for deep-well pumps.



J. T. 8. BROWN, JR-

WORKING HEAD FOR DEEP WELL PUMPS.

APPLICATION FILED NOV. 4. 1916.

1,218,626. Patented Mar. 13, 1917.

3 SHEETS-SHEET I.

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i N a a I l/VVEIVTOR d .H m %Q/B%@W% IIIPIEIIIHNMIMI n .l. T. 8. BROWN, JR.

WORKING HEAD FOR DEEP WELL PUMPS. APPLICATION mm NOV. 4, 1916.

1,21 8,626. Patented Mar. 13, 1917.

3 SHEETS-SHEET 2- INI/ENTOR Z ATTORNEY J. T. 8. BROWN, JR.

WORKING HEAD FOR DEEP WELL PUMPS.

APPLICATION FILED NOV. 4. 1916.

1,218,626. PatentedMar. 13, 1917.

3 SHEETS-SHEET 3.

JOHN T. S. BROWN, JR., OF PROSPECT, KENTUCKY.

WORKING HEAD FOR DEEP-WELL FUMPS.

Specification of Letters Patent.

Patented Mar. 13, 1917.

Application filed November 4, 1916 Serial No. 129,431.

' Working Heads for Deep-Well Pumps of '7, a sectional detail.

which the following is a specification.

This invention relates to working heads of the character used in connection with deepwell pumps.

Deep well pumps are operated with a long slow stroke, the pump rod being either directly connected to the piston of a slow speed vertical engine, or connected by a pitman to 1 a crank on a shaft driven from a suitable source of power. In such case the length of the crank is of course half that of the stroke of the pump, and the angle of transmission varies continuously with consequent loss of efficiency.

An object of this invention is to provide a device of the character described which will be economical in construction, which will be strong and durable and which will most efliciently perform the functions for which it is intended.

With the foregoing and other objects in view, the invention consists of the novel construction and arrangement of parts illustrated in the accompanying drawings, which form a art of this specification, wherein is set fort an embodiment of the invention, but it is to be understood that such changes and modifications may be resorted to as come within the scope of the claims appended hereunto.

In the accompanying drawings, comprising three sheets, wherein similar reference characters designate like parts in the several views, Figure 1, is a front elevation of an embodiment of the. invention with parts broken away to show the construction: Fig. 2, a side elevation, parts being broken away: Fig. 3, a section on line 3-3 of Fig. 1: Fig. 4, a perspective view of the transversely sliding member: Fig.5, a perspective view of the ball retainer on the transverse member: Fig. 6, a section on line 66 of Fig. 1: Fig.

Referring now to the drawings, the reference character -10- designates a well casing, 11- a pump head, which is attached to and closes the casing, 12- a discharge pipe, and 13- a pump rod which extends through a stufiing box -l4--, downsuitable means such as clips 39.

ward into the casing to a connection with the plunger. A bed-plate 15--, of suitable construction, is provided on its forward side with a semi-circular recess, or depression which fits about the pump head, to which it is secured by suitable means such as bolts 16 which extend through flanges.17 extended from the opposite sides of the pump head. This method of connection permlts the bed-plate, with its super-incumbent structure, to be detached from the pump head and be moved back out of the way for the purpose of withdrawing the plunger from; the well casing. A frame 20 is erected on the bed plate. This frame may be constructed in any suitable manner, but preferably of angle iron, suitably braced. It comprises two side members -21 and 22 rigidly connected and spaced apart by transverse girders 23, 24, 25-. A shaft 26 mounted in bearings 27 on the girders 23 and 24 is provided with tight and loose pulleys 28, 29- whereby motion may be transmitted to it from a suitable source of power. A gear wheel 30 is secured on the forward end of the shaft, and a reduced portion, or pin '31 extends axially slightly beyond the plane of the gear wheel and an annular ball bearing 32- is positioned thereon. Vertical guide rods -35 are suitably supported in front of the frame and cross-heads 36, 37 are slidably positioned thereon. The cross heads are ,held in spaced relationship by tie-rods 38. The

pump rod is connected to the cross heads by The upper end of the rod and its respective clip is screw threaded to provide a firmer hold. A plate 40- is slidably mounted between the cross-heads, on each end of this plate are secured steel plates provided with V shaped ways 41- which correspond with similar ways 42 in plates 43- which are affixed to the opposed faces of the crossheads, steel balls 44 being disposed in the ways and retained therein by means of plates 45-, any lost motion caused by wear of the ways, or balls may be taken up by adjusting nuts 33- on the tie rods. To the rear side of the plate 40 an elongated gear -46 is secured with which the gear wheel 30 meshes. The gear 46 comprises parallel sides joined by semi-circular ends, the length of the gear being the same as the stroke of the pump. A runway, or channel 47- formed in the plate 40 conforms in outline with the elongated gear and is of such depth and Width as to receive the ball bearing 32 on the end of the shaft and is spaced from the gear so that when the pm 31, and associated ball bearing is disposed in the runway the gear wheel will be engaged with the elongated gear and will. be so maintained. As the gear wheel is rotated it causes the elongated gear and associated parts, the cross-heads and pump rod, to move longitudinally in alternate directions, as the gear wheel engages with the respective sides of the elongated gear. When the gear wheel engages with the end sections of the elongated gear, the gear wheel being held stationary in its bearings, the plate is perforce shifted laterally between the crossheads. It will be observed that the distance between the center of the shaft and the point where the power is applied, 71. e. the centers of the gear teeth, is constant and considerably lessthan is the case where the pump rod is connected by a pitman rod to a crank.

In my device the angle at which the power is transmitted is substantially" constant, while withthe crank connection the angle of transmission varies continuously, consequently aconsiderable saving in power is obtained by the use of my improved device.-

It is thought that the construction, operation and many advantages of my invention may readily be understood by those skilled in the art, and having so described it,

thereon, said ball-bearing 1,21e,eae F I claim:

1. A' frame," guide rods carried thereby, adjustably spaced cross heads positioned on said rods, a plate slidably, mounted between said heads, a rack secured on said plate, a shaft rotatably mounted insaid frame, a W

said shaft meshing with said I said heads, a rack secured on said plate, a

shaft rotatably mounted in said frame, a

gear wheel on said shaft -meshing with said rack, said. mg in outl1ne-w1th sa1d rack, and. an .axia'l extension of the shaft entered in said run-' way andtraveling therein.

plate having a runway conform rame, guide rods carried thereby,

cross heads slidablymo unted thereon, rods connecting and maintaining said'cross heads in adjustable spaced relationship, a plate slidably mounted between the heads, a rack secured on said plate, mounted in said frame, shaft and meshing with said rack, the plate havinga runway which follows the contour of the rack, the shaft havin a terminal reduced portion and an annu ar' ball-bearing entered in said runway and traveling therein. V

' JOHN T. S. BROWN, JR.

a shaft rotatably. a gear wheel on said 

